Synergistic Construction of Superhydrophilic PVDF Membranes by Dual Modification Strategies for Efficient Emulsion Separation

Small, Journal Year: 2024, Volume and Issue: unknown

Published: May 21, 2024

Solving the problem of oil and water pollution is an important topic in environmental protection. The separation oil-water emulsion with high efficiency low consumption has been direction social efforts. Membrane technology combined surface wettability pore size screening considered to be one most promising ways separate emulsions. In this paper, polyvinylidene difluoride (PVDF) membrane prepared by combining two methods blending coating modification as a double barrier. PVDF can completely wet water, achieve superhydrophilic air, superoleophobic underwater. flux are 99.57% 678 L h

Language: Английский

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Hydrogel network of polyvinyl alcohol (PVA), pyrogallol (PG) and Fe(III) for building superhydrophilic PVDF membrane

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(4), P. 113213 - 113213

Published: June 2, 2024

Language: Английский

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Optimizing PVDF-Tannic Acid Membrane for Treating Actual River Water using Response Surface Methodology

South African Journal of Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Improved Oil/Water Separation by Employing Packed-Bed Filtration of Modified Quartz Particles

Water, Journal Year: 2025, Volume and Issue: 17(9), P. 1339 - 1339

Published: April 29, 2025

This study explores the development and optimization of quartz-based filtration media for industrial oil–water separation, focusing on enhancing surface wettability, minimizing fouling, improving oil rejection efficiency. High-purity quartz particles (SiO2: 98%, Fe2O3: 0.18%, particle size: 0.8–1.8 mm) were evaluated in three configurations: raw, acid-washed, surface-coated with hydrophilic nanoparticles (Al2O3 P2O5). The medium was constructed as a packed-bed rather than continuous sintered membrane, providing cost-effective modular structure separation processes. Comprehensive material characterization performed using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS). XRD confirmed crystalline stability across all treatments, while SEM EDS revealed enhanced morphology elemental distribution—especially phosphorus aluminum—in coated samples. Performance testing synthetic oily wastewater (initial concentration: 183,754.8 mg/L) demonstrated that achieved superior reducing residual concentration to 29.3 mg/L, compared 1583.7 mg/L 1859.8 washed raw quartz, respectively. Contact angle analysis improved hydrophilicity media, which also exhibited lower fouling propensity. Taguchi (conducted via Minitab 21.3) regression modeling identified coating operational pressure (optimal at 2.5 bar) most significant parameters influencing rejection. Post-filtration structural integrity durability. Additionally, flux recovery above 90% after backwashing indicated strong regeneration capability. These findings validate surface-modified packed beds robust, scalable, economically viable alternatives conventional membranes treatment. Future research will explore multilayer coatings, long term performance under aggressive conditions, AI-based prediction models.

Language: Английский

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Self-Assembled Sandwich-like Mixed Matrix Membrane of Defective Zr-MOF for Efficient Gas Separation

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(4), P. 279 - 279

Published: Feb. 12, 2025

Membrane technology has been widely used in industrial CO2 capturing, gas purification and separation, arousing attention due to its advantages of high efficiency, energy saving environmental protection. In the context reducing global carbon emissions combating climate change, it is particularly important capture separate greenhouse gasses such as CO2. Zr-MOF can be a multi-dimensional modification on polymer membrane prepare self-assembled MOF-based mixed matrix membranes (MMMs), aiming at problem weak adhesion or bonding force between separation layer porous carrier. When defective UiO-66 applied PVDF functional layer, performance significantly improved. TUT-UiO-3-TTN@PVDF permeation flux 14,294 GPU selectivity 27 for CO2/N2 18 CO2/CH4, respectively. The permeability exhibited change after 40 h continuous operation, improving showing exceptional stability large-scale applications.

Language: Английский

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Synergistic Construction of Polyacrylamide Hydrogel-Modified Membranes via a Layer-by-Layer Modification Strategy for Efficient Emulsion Separation

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Language: Английский

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One-step water/NMP solvent exchange to prepare high-throughput hydrophilic L-TA/polyvinylidene fluoride membranes towards efficient separating oil-in-water emulsion

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: unknown, P. 136592 - 136592

Published: March 1, 2025

Language: Английский

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Designing of multifunctional coatings: Recent updates

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 95 - 121

Published: Jan. 1, 2025

Language: Английский

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Antifouling multi-functional membrane for oil/dye wastewater treatment: Regeneration while treating mixed pollutants

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 332, P. 125804 - 125804

Published: Nov. 23, 2023

Language: Английский

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Fabrication of hollow fiber membrane microstructures and the investigation of antifouling mechanism for vegetable oil wastewater

Journal of Membrane Science, Journal Year: 2023, Volume and Issue: 693, P. 122385 - 122385

Published: Dec. 23, 2023

Language: Английский

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